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Re: [Qemu-devel] [PATCH v1] migration: skip sending ram pages released b

From: Eric Blake
Subject: Re: [Qemu-devel] [PATCH v1] migration: skip sending ram pages released by virtio-balloon driver.
Date: Thu, 10 Mar 2016 10:27:03 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

On 03/10/2016 01:57 AM, Jitendra Kolhe wrote:

>>> +++ b/qapi-schema.json
>>> @@ -544,11 +544,14 @@
>>>  #          been migrated, pulling the remaining pages along as needed. 
>>> NOTE: If
>>>  #          the migration fails during postcopy the VM will fail.  (since 
>>> 2.5)
>>>  #
>>> +# @skip-balloon: Skip scaning ram pages released by virtio-balloon driver.
>> s/scaning/scanning/
>>> +#          (since 2.5)
>> You've missed 2.5.  In fact, this is borderline between new feature and
>> bug fix, so you may have even missed 2.6 since soft freeze has already
>> passed, in which case this should read 2.7.
> Thanks for sharing the timeline was not aware of it. I think making changes 
> to 
> version 2.7 should be fine. However the version string "(since 2.5)" is
> part of existing code. I have added a new option "skip-balloon" below it.

MigrationCapability is since 1.2, x-postcopy-ram is since 2.5, and your
addition of skip-balloon is since 2.7.  In other words, when you
copy-pasted x-postcopy-ram's "(since 2.5)" as your starting point for
writing the docs for your new skip-balloon, you need to update the
version in which your new capability is actually exposed.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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